In a tightening presidential campaign, Trump's endorsements of Robert F. Kennedy Jr. and his anti-vaccine rhetoric alarm public health experts. Trump has hinted at Kennedy's potential role in health policy initiatives, including oversight of vaccine safety, despite widespread warnings over misinformation. Prominent figures like J.D. Vance share their vaccine skepticism, echoing Kennedy's debunked claims. Critics argue these views could jeopardize public trust in vaccines and reverse decades of progress in immunization. Amid speculation about future cabinet roles, health officials fear the implications of elevating anti-vaccine sentiments in shaping public health strategies.